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通过分子印迹增强的基于SnO₂的丙酮气体传感器的制备

Fabrication of a SnO2-based acetone gas sensor enhanced by molecular imprinting.

作者信息

Tan Wenhu, Ruan Xiaofan, Yu Qiuxiang, Yu Zetai, Huang Xintang

机构信息

.

出版信息

Sensors (Basel). 2014 Dec 26;15(1):352-64. doi: 10.3390/s150100352.

DOI:10.3390/s150100352
PMID:25549174
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4327023/
Abstract

This work presents a new route to design a highly sensitive SnO2-based sensor for acetone gas enhanced by the molecular imprinting technique. Unassisted and acetone-assisted thermal synthesis methods are used to synthesis SnO2 nanomaterials. The prepared SnO2 nanomaterials have been characterized by X-ray powder diffraction, scanning electron microscopy and N2 adsorption-desorption. Four types of SnO2 films were obtained by mixing pure deionized water and liquid acetone with the two types of as-prepared powders, respectively. The acetone gas sensing properties of sensors coated by these films were evaluated. Testing results reveal that the sensor coated by the film fabricated by mixing liquid acetone with the SnO2 nanomaterial synthesized by the acetone-assisted thermal method exhibits the best acetone gas sensing performance. The sensor is optimized for the smooth adsorption and desorption of acetone gas thanks to the participation of acetone both in the procedure of synthesis of the SnO2 nanomaterial and the device fabrication, which results in a distinct response-recovery behavior.

摘要

这项工作提出了一种新途径，用于设计一种通过分子印迹技术增强的、对丙酮气体具有高灵敏度的基于SnO2的传感器。采用无辅助和丙酮辅助热合成方法来合成SnO2纳米材料。通过X射线粉末衍射、扫描电子显微镜和N2吸附-脱附对制备的SnO2纳米材料进行了表征。分别将纯去离子水和液态丙酮与两种制备好的粉末混合，得到了四种类型的SnO2薄膜。评估了由这些薄膜涂覆的传感器对丙酮气体的传感性能。测试结果表明，由液态丙酮与通过丙酮辅助热法合成的SnO2纳米材料混合制备的薄膜涂覆的传感器表现出最佳的丙酮气体传感性能。由于丙酮在SnO2纳米材料合成过程和器件制造过程中的参与，该传感器针对丙酮气体的平滑吸附和解吸进行了优化，从而导致明显的响应-恢复行为。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/bed87af29551/sensors-15-00352f12.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/6a45e0d23746/sensors-15-00352f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/e43b48157a96/sensors-15-00352f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/119f0aa7e9f3/sensors-15-00352f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/4be3893656b9/sensors-15-00352f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/cd19b59cd88c/sensors-15-00352f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/fc2ed50a3958/sensors-15-00352f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/92fc8111a9af/sensors-15-00352f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/bb374fd3334a/sensors-15-00352f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/bed87af29551/sensors-15-00352f12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/40af5fcfbacf/sensors-15-00352f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/225204a19f7d/sensors-15-00352f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/9cc4c32492d1/sensors-15-00352f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/6a45e0d23746/sensors-15-00352f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/e43b48157a96/sensors-15-00352f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/119f0aa7e9f3/sensors-15-00352f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/4be3893656b9/sensors-15-00352f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/cd19b59cd88c/sensors-15-00352f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/fc2ed50a3958/sensors-15-00352f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/92fc8111a9af/sensors-15-00352f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/bb374fd3334a/sensors-15-00352f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca80/4327023/bed87af29551/sensors-15-00352f12.jpg

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